4. Rotary expansible chamber devices
  5. Unlike helical surfaces on relatively wobbling rotating...

Kirk R. Shirley

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Drill steering apparatus

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Axially spaced opposed bore wall engaging guides
Patent

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Drill steering apparatus

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Axially spaced opposed bore wall engaging guides
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Drill steering apparatus

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Axially spaced opposed bore wall engaging guides
Patent

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Progressive cavity drive train

Rotary expansible chamber devices – Unlike helical surfaces on relatively wobbling rotating...
Patent

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Well drilling method and apparatus therefor

Wells – Processes – Cementing – plugging or consolidating
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Profile ID: LFUS-PAI-P-798006

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